Mtui, G. Y. S. “Combined Chemical and Biological Treatment of Recalcitrant Industrial Effluents: A Case Study on Kraft Pulp Wastewater”. Tanzania Journal of Science 27, no. 2 (April 18, 2021): 79–92. Accessed May 6, 2025. http://www.tjs.udsm.ac.tz/index.php/tjs/article/view/569.